71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
// **************************************************************************
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// Copyright (c) 1997-1999 Microsoft Corporation.
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//
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// File: Provider.cpp
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//
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// Description:
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// Implementation for the command-line event consumer provider class
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//
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// History:
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//
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// **************************************************************************
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#include "stdafx.h"
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#include "Provider.h"
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#include "Consumer.h"
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#include <objbase.h>
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CProvider::CProvider(CListBox *pOutputList)
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{
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m_cRef = 0L;
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m_pOutputList = pOutputList;
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}
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CProvider::~CProvider()
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{
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}
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STDMETHODIMP CProvider::QueryInterface(REFIID riid, LPVOID FAR *ppv)
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{
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*ppv=NULL;
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if (riid == IID_IUnknown || riid == IID_IWbemEventConsumerProvider)
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*ppv=this;
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if (*ppv != NULL)
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{
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((LPUNKNOWN)*ppv)->AddRef();
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return NOERROR;
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}
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return E_NOINTERFACE;
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}
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STDMETHODIMP_(ULONG) CProvider::AddRef(void)
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{
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return ++m_cRef;
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}
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STDMETHODIMP_(ULONG) CProvider::Release(void)
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{
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if (--m_cRef != 0L)
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return m_cRef;
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delete this;
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return 0L;
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}
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//-----------------------------------------------------------
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STDMETHODIMP CProvider::FindConsumer(
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IWbemClassObject* pLogicalConsumer,
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IWbemUnboundObjectSink** ppConsumer)
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{
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// create the logical consumer.
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CConsumer* pSink = new CConsumer(m_pOutputList);
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// return it's "sink" interface.
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return pSink->QueryInterface(IID_IWbemUnboundObjectSink,
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(void**)ppConsumer);
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}
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